Data transmission system



March 14, 1967 B. A. HARRIS ETAL 3,309,673

DATA TRAN SMI SS ION SYSTEM Filed Jan. 30, 1963 Sheets-Sheet 1 TRANSMITTER TRANSMITTER sTATIoN N 0.I STATION No.2

DUAL 10 TAB cARD /|l TAB mm a BADGE READERs READERs a MANUAL a MA'NUAL DATA DATA INsERTIoN INsERTloN if if TRANSMITTER STATION No.3

BADGE READER TRANSMITTER STATION No.4 I I DUAL TAB cARD L L READERS i BADGE a MANUAL READER DATA v A INSERTION I2 13 IB L mm A I I REcEIvER- FiG, I CONTROL RECORDER TIME TRANsv MlssIoN, I MANUAL a \M S BEN A. HAR I AUTOMAT'C GILBERT A. DENNIS ATTENDANCE ATTORNEY March 14, 1967 a. A. HARRIS ETAL 3,309,673

DATA TRANSMISSION SYSTEM Filed Jan. 30, 1963 66 Sheets-Sheet :5

TRANSACTION SELECTOR a MANUAL DATA 22 TNSERTION TAB TAB CARD CARD 3 READER READER 20 20 I Z3 1 SERIALTZER TRANSACTION SELECTOR a MANUAL DATA INSERTION TAB CARD R E A D'Z R HEADER M24 2 F l Fl G 4 SER IALIZ ER March 14, 1967 a. A. HARRIS ET 3,3 7

DATA TRANSMISS ION SYSTEM Filed Jan 30, 1963 5Q Sheets-Sheet 4 TRANSACTION SELECTOR 8 MANUAL DATA \22 INSERTION F I G 5 TAB TAB CARD CARD READER READER 2O ,7 V 6 ii u* ,VH BADGE My 'MiLfi READER liERIALIZER 3 24 mm AWAWAi BADGE x24 READER mLfi Mmh 14, 1967 Filed Jan. 30 1963 B. A. HARRIS ET AL DATA TRANSMISSION SYSTEM MOTOR 5 Sheets-Sheet 5 FIG. 7i

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DATA TRANSMISSION SYSTEM Sheets-Sheet 15 Q 1 iiiiiii T l March 14, 1967 Filed Jan. 30, 1963 March 14, 1967 a. A. HARRIS ETAL 3,309,673

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1. A DATA TRANSMISSION SYSTEM COMPRISING A DATA RECEIVER, A PLURALITY OF DATA SUPPLY SOURCES ADAPTED TO BE COUPLED TO SAID RECEIVER THROUGH A DATA COMMUNICATION CHANNEL COMMON TO ALL THEREOF, MEANS AT EACH LOCATION OF A DATA SOURCE AND OPERABLE TO INITIATE A REQUEST FOR ACCESS TO SAID DATA CHANNEL OF ANY LOCAL DATA SUPPLY SOURCE HAVING DATA AVAILABLE FOR TRANSMISSION, CONTROL MEANS AT SAID EACH SOURCE LOCATION AND OPERATED BY SAID ACCESS REQUEST MEANS THEREOF FOR SENSING THE ESTABLISHMENT OF PRESELECTED OPERATIONAL CONDITIONS VERIFYING THAT ANY AVAILABLE-DATA SUPPLY SOURCE AT SAID EACH LOCATION HAS A QUANTITY OF DATA IN READINESS FOR TRANSMISSION AND HAS PERFORMED A PRELIMINARY OPERATION EVIDENCING THAT SUCH SOURCE IS IN OPERATIONAL READINESS TO TRANSMIT ITS AVAILABLE DATA AND UPON SUCH VERIFICATION TO COMPLETE THE REQUEST FOR ACCESS TO SAID CHANNEL OF SAID READY DATA SOURCES, AND MEANS PROVIDING AUTOMATIC OPERATIONAL INTERCONTROL BETWEEN SAID ACCESS INITIATING CONTROL MEANS OF ALL OF SAID DATA-SOURCE LOCATIONS FOR DYNAMICALLY ASSIGNING BY A PRESELECTED PROGRAM OF SEQUENTIAL PRIORITIES FROM A FIRST TO A LAST THEREOF THE ORDERS IN WHICH THE DATA SOURCES OF LOCALITIES HAVING CONTROL-MEANS VERIFIED READINESS FOR ACCESS AUTOMATICALLY COMPLETE THEIR ACCESS ONE AFTER ANOTHER TO SAID CHANNEL FOR CONSECUTIVE SOURCE TRANSMISSIONS TO SAID RECEIVER. 